Why have a peer-reviewed journal when we can talk about the documentary? http://en.wikipedia.org/wiki/Idiocracy http://en.wikipedia.org/wiki/Idiocracy Jokes a

Why have a peer-reviewed journal when we can talk about the documentary? http://en.wikipedia.org/wiki/Idiocracy http://en.wikipedia.org/wiki/Idiocracy Jokes aside, I guess I will have to read the article, would this not been the case from the beginning? How drastic are changes in IQ averages over hundreds of years? Is it possible that there highest IQ holders were not a very slim strata of society, or are we to suppose over time that the margin and spread is getting wider?